Short for Peripheral Component Interconnect, PCI was introduced by Intel in 1992. The PCI bus came in both 32-bit (133MBps) and 64-bit versions and was used to attach hardware to a computer. Although commonly used in computers from the late 1990s to the early 2000s, PCI has since been replaced with PCI Express.

Revisions came in 1993 to version 2.0, and in 1995 to PCI 2.1; as an expansion to the ISA bus. Unlike ISA and other earlier expansion cards, PCI follows the PnP specification and therefore did not require any jumpers or dip switches. The picture below shows an example of what PCI slots look like on a motherboard. As you can see, there are three PCI slots: PCI4, PCI5, and PCI6.

CNR slot

Examples of PCI devices

PCI device drivers

If you are looking for PCI drivers, you most likely need to download them for a specific PCI device. For example, if you need a PCI Ethernet adapter driver, you should install the drivers for the network card. See our drivers section for a listing of drivers for various devices.

Questions and answers related to PCI

Also see: Expansion slot, Mini PCI, Motherboard terms, PCI-X, PIIX, PXI